1 /* $OpenBSD: ofdev.c,v 1.40 2024/04/14 03:26:25 jsg Exp $ */
2 /* $NetBSD: ofdev.c,v 1.1 2000/08/20 14:58:41 mrg Exp $ */
3
4 /*
5 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
6 * Copyright (C) 1995, 1996 TooLs GmbH.
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed by TooLs GmbH.
20 * 4. The name of TooLs GmbH may not be used to endorse or promote products
21 * derived from this software without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
27 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
28 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
29 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
30 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
31 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
32 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 */
34 /*
35 * Device I/O routines using Open Firmware
36 */
37 #include <sys/param.h>
38 #include <sys/disklabel.h>
39 #ifdef NETBOOT
40 #include <netinet/in.h>
41 #endif
42
43 #include <lib/libkern/funcs.h>
44 #include <lib/libsa/stand.h>
45 #include <lib/libsa/ufs.h>
46 #include <lib/libsa/ufs2.h>
47 #include <lib/libsa/cd9660.h>
48 #ifdef NETBOOT
49 #include <lib/libsa/nfs.h>
50 #endif
51
52 #ifdef SOFTRAID
53 #include <sys/queue.h>
54 #include <dev/softraidvar.h>
55 #include "softraid_sparc64.h"
56 #include "disk.h"
57 #endif
58
59 #include <dev/sun/disklabel.h>
60 #include "openfirm.h"
61 #include "ofdev.h"
62
63 /* needed for DISKLABELV1_FFS_FRAGBLOCK */
64 int ffs(int);
65
66 extern char bootdev[];
67
68 /*
69 * This is ugly. A path on a sparc machine is something like this:
70 *
71 * [device] [-<options] [path] [-options] [otherstuff] [-<more options]
72 *
73 */
74
75 static char *
filename(char * str,char * ppart)76 filename(char *str, char *ppart)
77 {
78 char *cp, *lp;
79 char savec;
80 int dhandle;
81 char devtype[16];
82
83 lp = str;
84 devtype[0] = 0;
85 *ppart = 0;
86 for (cp = str; *cp; lp = cp) {
87 /* For each component of the path name... */
88 while (*++cp && *cp != '/');
89 savec = *cp;
90 *cp = 0;
91 /* ...look whether there is a device with this name */
92 dhandle = OF_finddevice(str);
93 DNPRINTF(BOOT_D_OFDEV, "filename: OF_finddevice(%s) says %x\n",
94 str, dhandle);
95 *cp = savec;
96 if (dhandle == -1) {
97 /* if not, lp is the delimiter between device and path */
98 /* if the last component was a block device... */
99 if (!strcmp(devtype, "block")) {
100 /* search for arguments */
101 DNPRINTF(BOOT_D_OFDEV, "filename: hunting for "
102 "arguments in %s\n", str);
103 for (cp = lp;
104 --cp >= str && *cp != '/' && *cp != '-';);
105 if (cp >= str && *cp == '-') {
106 /* found arguments, make firmware ignore them */
107 *cp = 0;
108 for (cp = lp; *--cp && *cp != ',';)
109 ;
110 if (*++cp >= 'a' && *cp <= 'a' + MAXPARTITIONS)
111 *ppart = *cp;
112 }
113 }
114 DNPRINTF(BOOT_D_OFDEV, "filename: found %s\n", lp);
115 return lp;
116 } else if (OF_getprop(dhandle, "device_type", devtype, sizeof devtype) < 0)
117 devtype[0] = 0;
118 }
119 DNPRINTF(BOOT_D_OFDEV, "filename: not found\n", lp);
120 return 0;
121 }
122
123 int
strategy(void * devdata,int rw,daddr_t blk,size_t size,void * buf,size_t * rsize)124 strategy(void *devdata, int rw, daddr_t blk, size_t size, void *buf,
125 size_t *rsize)
126 {
127 struct of_dev *dev = devdata;
128 u_quad_t pos;
129 int n;
130
131 #ifdef SOFTRAID
132 /* Intercept strategy for softraid volumes. */
133 if (dev->type == OFDEV_SOFTRAID)
134 return sr_strategy(bootdev_dip->sr_vol, bootdev_dip->sr_handle,
135 rw, blk, size, buf, rsize);
136 #endif
137 if (dev->type != OFDEV_DISK)
138 panic("strategy");
139
140 DNPRINTF(BOOT_D_OFDEV, "strategy: block %lx, partition offset %lx, "
141 "blksz %lx\n", (long)blk, (long)dev->partoff, (long)dev->bsize);
142 DNPRINTF(BOOT_D_OFDEV, "strategy: seek position should be: %lx\n",
143 (long)((blk + dev->partoff) * dev->bsize));
144 pos = (u_quad_t)(blk + dev->partoff) * dev->bsize;
145
146 for (;;) {
147 DNPRINTF(BOOT_D_OFDEV, "strategy: seeking to %lx\n", (long)pos);
148 if (OF_seek(dev->handle, pos) < 0)
149 break;
150 DNPRINTF(BOOT_D_OFDEV, "strategy: reading %lx at %p\n",
151 (long)size, buf);
152 if (rw == F_READ)
153 n = OF_read(dev->handle, buf, size);
154 else
155 n = OF_write(dev->handle, buf, size);
156 if (n == -2)
157 continue;
158 if (n < 0)
159 break;
160 if (rsize)
161 *rsize = n;
162 return 0;
163 }
164 return EIO;
165 }
166
167 static int
devclose(struct open_file * of)168 devclose(struct open_file *of)
169 {
170 struct of_dev *op = of->f_devdata;
171
172 #ifdef NETBOOT
173 if (op->type == OFDEV_NET)
174 net_close(op);
175 #endif
176 #ifdef SOFTRAID
177 if (op->type == OFDEV_SOFTRAID) {
178 op->handle = -1;
179 return 0;
180 }
181 #endif
182 OF_close(op->handle);
183 op->handle = -1;
184 return 0;
185 }
186
187 struct devsw devsw[1] = {
188 {
189 "OpenFirmware",
190 strategy,
191 (int (*)(struct open_file *, ...))nodev,
192 devclose,
193 noioctl
194 }
195 };
196 int ndevs = sizeof devsw / sizeof devsw[0];
197
198 #ifdef SPARC_BOOT_UFS
199 static struct fs_ops file_system_ufs = {
200 ufs_open, ufs_close, ufs_read, ufs_write, ufs_seek,
201 ufs_stat, ufs_readdir, ufs_fchmod
202 };
203 static struct fs_ops file_system_ufs2 = {
204 ufs2_open, ufs2_close, ufs2_read, ufs2_write, ufs2_seek,
205 ufs2_stat, ufs2_readdir, ufs2_fchmod
206 };
207 #endif
208 #ifdef SPARC_BOOT_HSFS
209 static struct fs_ops file_system_cd9660 = {
210 cd9660_open, cd9660_close, cd9660_read, cd9660_write, cd9660_seek,
211 cd9660_stat, cd9660_readdir
212 };
213 #endif
214 #ifdef NETBOOT
215 static struct fs_ops file_system_nfs = {
216 nfs_open, nfs_close, nfs_read, nfs_write, nfs_seek,
217 nfs_stat, nfs_readdir
218 };
219 #endif
220
221 struct fs_ops file_system[4];
222 int nfsys;
223
224 static struct of_dev ofdev = {
225 -1,
226 };
227
228 char opened_name[256];
229
230 /************************************************************************
231 *
232 * The rest of this was taken from arch/sparc64/scsi/sun_disklabel.c
233 * and then substantially rewritten by Gordon W. Ross
234 *
235 ************************************************************************/
236
237 /* What partition types to assume for Sun disklabels: */
238 static u_char
239 sun_fstypes[8] = {
240 FS_BSDFFS, /* a */
241 FS_SWAP, /* b */
242 FS_OTHER, /* c - whole disk */
243 FS_BSDFFS, /* d */
244 FS_BSDFFS, /* e */
245 FS_BSDFFS, /* f */
246 FS_BSDFFS, /* g */
247 FS_BSDFFS, /* h */
248 };
249
250 /*
251 * Given a struct sun_disklabel, assume it has an extended partition
252 * table and compute the correct value for sl_xpsum.
253 */
254 static __inline u_int
sun_extended_sum(struct sun_disklabel * sl,void * end)255 sun_extended_sum(struct sun_disklabel *sl, void *end)
256 {
257 u_int sum, *xp, *ep;
258
259 xp = (u_int *)&sl->sl_xpmag;
260 ep = (u_int *)end;
261
262 sum = 0;
263 for (; xp < ep; xp++)
264 sum += *xp;
265 return (sum);
266 }
267
268 /*
269 * Given a SunOS disk label, set lp to a BSD disk label.
270 * The BSD label is cleared out before this is called.
271 */
272 static int
disklabel_sun_to_bsd(struct sun_disklabel * sl,struct disklabel * lp)273 disklabel_sun_to_bsd(struct sun_disklabel *sl, struct disklabel *lp)
274 {
275 struct sun_preamble *preamble = (struct sun_preamble *)sl;
276 struct sun_partinfo *ppp;
277 struct sun_dkpart *spp;
278 struct partition *npp;
279 u_short cksum = 0, *sp1, *sp2;
280 int i, secpercyl;
281
282 /* Verify the XOR check. */
283 sp1 = (u_short *)sl;
284 sp2 = (u_short *)(sl + 1);
285 while (sp1 < sp2)
286 cksum ^= *sp1++;
287 if (cksum != 0)
288 return (EINVAL); /* SunOS disk label, bad checksum */
289
290 /* Format conversion. */
291 lp->d_magic = DISKMAGIC;
292 lp->d_magic2 = DISKMAGIC;
293 lp->d_flags = D_VENDOR;
294 memcpy(lp->d_packname, sl->sl_text, sizeof(lp->d_packname));
295
296 lp->d_secsize = DEV_BSIZE;
297 lp->d_nsectors = sl->sl_nsectors;
298 lp->d_ntracks = sl->sl_ntracks;
299 lp->d_ncylinders = sl->sl_ncylinders;
300
301 secpercyl = sl->sl_nsectors * sl->sl_ntracks;
302 lp->d_secpercyl = secpercyl;
303 if (DL_GETDSIZE(lp) == 0)
304 DL_SETDSIZE(lp, (u_int64_t)secpercyl * sl->sl_ncylinders);
305 lp->d_version = 1;
306
307 memcpy(&lp->d_uid, &sl->sl_uid, sizeof(lp->d_uid));
308
309 lp->d_acylinders = sl->sl_acylinders;
310
311 lp->d_npartitions = MAXPARTITIONS;
312
313 for (i = 0; i < 8; i++) {
314 spp = &sl->sl_part[i];
315 npp = &lp->d_partitions[i];
316 DL_SETPOFFSET(npp, spp->sdkp_cyloffset * secpercyl);
317 DL_SETPSIZE(npp, spp->sdkp_nsectors);
318 if (DL_GETPSIZE(npp) == 0) {
319 npp->p_fstype = FS_UNUSED;
320 } else {
321 npp->p_fstype = sun_fstypes[i];
322 if (npp->p_fstype == FS_BSDFFS) {
323 /*
324 * The sun label does not store the FFS fields,
325 * so just set them with default values here.
326 */
327 npp->p_fragblock =
328 DISKLABELV1_FFS_FRAGBLOCK(2048, 8);
329 npp->p_cpg = 16;
330 }
331 }
332 }
333
334 /* Clear "extended" partition info, tentatively */
335 for (i = 0; i < SUNXPART; i++) {
336 npp = &lp->d_partitions[i+8];
337 DL_SETPOFFSET(npp, 0);
338 DL_SETPSIZE(npp, 0);
339 npp->p_fstype = FS_UNUSED;
340 }
341
342 /* Check to see if there's an "extended" partition table
343 * SL_XPMAG partitions had checksums up to just before the
344 * (new) sl_types variable, while SL_XPMAGTYP partitions have
345 * checksums up to the just before the (new) sl_xxx1 variable.
346 * Also, disklabels created prior to the addition of sl_uid will
347 * have a checksum to just before the sl_uid variable.
348 */
349 if ((sl->sl_xpmag == SL_XPMAG &&
350 sun_extended_sum(sl, &sl->sl_types) == sl->sl_xpsum) ||
351 (sl->sl_xpmag == SL_XPMAGTYP &&
352 sun_extended_sum(sl, &sl->sl_uid) == sl->sl_xpsum) ||
353 (sl->sl_xpmag == SL_XPMAGTYP &&
354 sun_extended_sum(sl, &sl->sl_xxx1) == sl->sl_xpsum)) {
355 /*
356 * There is. Copy over the "extended" partitions.
357 * This code parallels the loop for partitions a-h.
358 */
359 for (i = 0; i < SUNXPART; i++) {
360 spp = &sl->sl_xpart[i];
361 npp = &lp->d_partitions[i+8];
362 DL_SETPOFFSET(npp, spp->sdkp_cyloffset * secpercyl);
363 DL_SETPSIZE(npp, spp->sdkp_nsectors);
364 if (DL_GETPSIZE(npp) == 0) {
365 npp->p_fstype = FS_UNUSED;
366 continue;
367 }
368 npp->p_fstype = FS_BSDFFS;
369 npp->p_fragblock =
370 DISKLABELV1_FFS_FRAGBLOCK(2048, 8);
371 npp->p_cpg = 16;
372 }
373 if (sl->sl_xpmag == SL_XPMAGTYP) {
374 for (i = 0; i < MAXPARTITIONS; i++) {
375 npp = &lp->d_partitions[i];
376 npp->p_fstype = sl->sl_types[i];
377 npp->p_fragblock = sl->sl_fragblock[i];
378 npp->p_cpg = sl->sl_cpg[i];
379 }
380 }
381 } else if (preamble->sl_nparts <= 8) {
382 /*
383 * A more traditional Sun label. Recognise certain filesystem
384 * types from it, if they are available.
385 */
386 i = preamble->sl_nparts;
387 if (i == 0)
388 i = 8;
389
390 npp = &lp->d_partitions[i-1];
391 ppp = &preamble->sl_part[i-1];
392 for (; i > 0; i--, npp--, ppp--) {
393 if (npp->p_size == 0)
394 continue;
395 if ((ppp->spi_tag == 0) && (ppp->spi_flag == 0))
396 continue;
397
398 switch (ppp->spi_tag) {
399 case SPTAG_SUNOS_ROOT:
400 case SPTAG_SUNOS_USR:
401 case SPTAG_SUNOS_VAR:
402 case SPTAG_SUNOS_HOME:
403 npp->p_fstype = FS_BSDFFS;
404 npp->p_fragblock =
405 DISKLABELV1_FFS_FRAGBLOCK(2048, 8);
406 npp->p_cpg = 16;
407 break;
408 case SPTAG_LINUX_EXT2:
409 npp->p_fstype = FS_EXT2FS;
410 break;
411 default:
412 /* FS_SWAP for _SUNOS_SWAP and _LINUX_SWAP? */
413 npp->p_fstype = FS_UNUSED;
414 break;
415 }
416 }
417 }
418
419 lp->d_checksum = 0;
420 lp->d_checksum = dkcksum(lp);
421 DNPRINTF(BOOT_D_OFDEV, "disklabel_sun_to_bsd: success!\n");
422 return (0);
423 }
424
425 /*
426 * Find a valid disklabel.
427 */
428 static char *
search_label(struct of_dev * devp,u_long off,char * buf,struct disklabel * lp,u_long off0)429 search_label(struct of_dev *devp, u_long off, char *buf, struct disklabel *lp,
430 u_long off0)
431 {
432 struct disklabel *dlp;
433 struct sun_disklabel *slp;
434 size_t read;
435
436 /* minimal requirements for archetypal disk label */
437 if (DL_GETDSIZE(lp) == 0)
438 DL_SETDSIZE(lp, 0x1fffffff);
439 lp->d_npartitions = MAXPARTITIONS;
440 if (DL_GETPSIZE(&lp->d_partitions[0]) == 0)
441 DL_SETPSIZE(&lp->d_partitions[0], 0x1fffffff);
442 DL_SETPOFFSET(&lp->d_partitions[0], 0);
443
444 if (strategy(devp, F_READ, off, DEV_BSIZE, buf, &read)
445 || read != DEV_BSIZE)
446 return ("Cannot read label");
447
448 /* Check for a disk label. */
449 dlp = (struct disklabel *) (buf + LABELOFFSET);
450 if (dlp->d_magic == DISKMAGIC) {
451 if (dkcksum(dlp))
452 return ("corrupt disk label");
453 *lp = *dlp;
454 DNPRINTF(BOOT_D_OFDEV, "search_label: found disk label\n");
455 return (NULL);
456 }
457
458 /* Check for a Sun disk label (for PROM compatibility). */
459 slp = (struct sun_disklabel *)buf;
460 if (slp->sl_magic == SUN_DKMAGIC) {
461 if (disklabel_sun_to_bsd(slp, lp) != 0)
462 return ("corrupt disk label");
463 DNPRINTF(BOOT_D_OFDEV, "search_label: found disk label\n");
464 return (NULL);
465 }
466
467 return ("no disk label");
468 }
469
470 int
load_disklabel(struct of_dev * ofdev,struct disklabel * label)471 load_disklabel(struct of_dev *ofdev, struct disklabel *label)
472 {
473 char buf[DEV_BSIZE];
474 size_t read;
475 int error = 0;
476 char *errmsg = NULL;
477
478 DNPRINTF(BOOT_D_OFDEV, "load_disklabel: trying to read disklabel\n");
479 if (strategy(ofdev, F_READ,
480 LABELSECTOR, DEV_BSIZE, buf, &read) != 0
481 || read != DEV_BSIZE
482 || (errmsg = getdisklabel(buf, label))) {
483 #ifdef BOOT_DEBUG
484 if (errmsg)
485 DNPRINTF(BOOT_D_OFDEV,
486 "load_disklabel: getdisklabel says %s\n", errmsg);
487 #endif
488 errmsg = search_label(ofdev, LABELSECTOR, buf, label, 0);
489 if (errmsg) {
490 printf("load_disklabel: search_label says %s\n",
491 errmsg);
492 error = ERDLAB;
493 }
494 }
495
496 return (error);
497 }
498
499 int
devopen(struct open_file * of,const char * name,char ** file)500 devopen(struct open_file *of, const char *name, char **file)
501 {
502 char *cp;
503 char partition;
504 char fname[256];
505 char buf[DEV_BSIZE];
506 struct disklabel label;
507 int dhandle, ihandle, part, parent;
508 int error = 0;
509 #ifdef SOFTRAID
510 char volno;
511 #endif
512
513 nfsys = 0;
514 if (ofdev.handle != -1)
515 panic("devopen");
516 DNPRINTF(BOOT_D_OFDEV, "devopen: you want %s\n", name);
517 if (strlcpy(fname, name, sizeof fname) >= sizeof fname)
518 return ENAMETOOLONG;
519 #ifdef SOFTRAID
520 if (bootdev_dip) {
521 if (fname[0] == 's' && fname[1] == 'r' &&
522 '0' <= fname[2] && fname[2] <= '9') {
523 /* We only support read-only softraid. */
524 of->f_flags |= F_NOWRITE;
525
526 volno = fname[2];
527 if ('a' <= fname[3] &&
528 fname[3] <= 'a' + MAXPARTITIONS) {
529 partition = fname[3];
530 if (fname[4] == ':')
531 cp = &fname[5];
532 else
533 cp = &fname[4];
534 } else {
535 partition = 'a';
536 cp = &fname[3];
537 }
538 } else {
539 volno = '0';
540 partition = 'a';
541 cp = &fname[0];
542 }
543 snprintf(buf, sizeof buf, "sr%c%c:", volno, partition);
544 if (strlcpy(opened_name, buf, sizeof opened_name)
545 >= sizeof opened_name)
546 return ENAMETOOLONG;
547 *file = opened_name + strlen(opened_name);
548 if (!*cp) {
549 if (strlcpy(buf, DEFAULT_KERNEL, sizeof buf)
550 >= sizeof buf)
551 return ENAMETOOLONG;
552 } else {
553 if (snprintf(buf, sizeof buf, "%s%s",
554 *cp == '/' ? "" : "/", cp) >= sizeof buf)
555 return ENAMETOOLONG;
556 }
557 if (strlcat(opened_name, buf, sizeof opened_name) >=
558 sizeof opened_name)
559 return ENAMETOOLONG;
560 } else {
561 #endif
562 cp = filename(fname, &partition);
563 if (cp) {
564 if (strlcpy(buf, cp, sizeof buf) >= sizeof buf)
565 return ENAMETOOLONG;
566 *cp = 0;
567 }
568 if (!cp || !*buf) {
569 if (strlcpy(buf, DEFAULT_KERNEL, sizeof buf)
570 >= sizeof buf)
571 return ENAMETOOLONG;
572 }
573 if (!*fname) {
574 if (strlcpy(fname, bootdev, sizeof fname)
575 >= sizeof fname)
576 return ENAMETOOLONG;
577 }
578 if (strlcpy(opened_name, fname,
579 partition ? (sizeof opened_name) - 2 : sizeof opened_name)
580 >= sizeof opened_name)
581 return ENAMETOOLONG;
582 if (partition) {
583 cp = opened_name + strlen(opened_name);
584 *cp++ = ':';
585 *cp++ = partition;
586 *cp = 0;
587 }
588 if (*buf != '/') {
589 if (strlcat(opened_name, "/", sizeof opened_name) >=
590 sizeof opened_name)
591 return ENAMETOOLONG;
592 }
593 if (strlcat(opened_name, buf, sizeof opened_name) >=
594 sizeof opened_name)
595 return ENAMETOOLONG;
596 *file = opened_name + strlen(fname) + 1;
597 #ifdef SOFTRAID
598 }
599 #endif
600 DNPRINTF(BOOT_D_OFDEV, "devopen: trying %s\n", fname);
601 #ifdef SOFTRAID
602 if (bootdev_dip) {
603 /* Redirect to the softraid boot volume. */
604 struct partition *pp;
605
606 bzero(&ofdev, sizeof ofdev);
607 ofdev.type = OFDEV_SOFTRAID;
608
609 if (partition) {
610 if (partition < 'a' ||
611 partition >= 'a' + MAXPARTITIONS) {
612 printf("invalid partition '%c'\n", partition);
613 return EINVAL;
614 }
615 part = partition - 'a';
616 pp = &bootdev_dip->disklabel.d_partitions[part];
617 if (pp->p_fstype == FS_UNUSED || pp->p_size == 0) {
618 printf("invalid partition '%c'\n", partition);
619 return EINVAL;
620 }
621 bootdev_dip->sr_vol->sbv_part = partition;
622 } else
623 bootdev_dip->sr_vol->sbv_part = 'a';
624
625 of->f_dev = devsw;
626 of->f_devdata = &ofdev;
627
628 #ifdef SPARC_BOOT_UFS
629 bcopy(&file_system_ufs, &file_system[nfsys++], sizeof file_system[0]);
630 bcopy(&file_system_ufs2, &file_system[nfsys++], sizeof file_system[0]);
631 #else
632 #error "-DSOFTRAID requires -DSPARC_BOOT_UFS"
633 #endif
634 return 0;
635 }
636 #endif
637 if ((dhandle = OF_finddevice(fname)) == -1)
638 return ENOENT;
639
640 DNPRINTF(BOOT_D_OFDEV, "devopen: found %s\n", fname);
641 if (OF_getprop(dhandle, "name", buf, sizeof buf) < 0)
642 return ENXIO;
643 DNPRINTF(BOOT_D_OFDEV, "devopen: %s is called %s\n", fname, buf);
644 if (OF_getprop(dhandle, "device_type", buf, sizeof buf) < 0)
645 return ENXIO;
646 DNPRINTF(BOOT_D_OFDEV, "devopen: %s is a %s device\n", fname, buf);
647 DNPRINTF(BOOT_D_OFDEV, "devopen: opening %s\n", fname);
648 if ((ihandle = OF_open(fname)) == -1) {
649 DNPRINTF(BOOT_D_OFDEV, "devopen: open of %s failed\n", fname);
650 return ENXIO;
651 }
652 DNPRINTF(BOOT_D_OFDEV, "devopen: %s is now open\n", fname);
653 bzero(&ofdev, sizeof ofdev);
654 ofdev.handle = ihandle;
655 ofdev.type = OFDEV_DISK;
656 ofdev.bsize = DEV_BSIZE;
657 if (!strcmp(buf, "block")) {
658 error = load_disklabel(&ofdev, &label);
659 if (error && error != ERDLAB)
660 goto bad;
661 else if (error == ERDLAB) {
662 if (partition)
663 /* User specified a partition, but there is none */
664 goto bad;
665 /* No, label, just use complete disk */
666 ofdev.partoff = 0;
667 } else {
668 part = partition ? partition - 'a' : 0;
669 ofdev.partoff = label.d_partitions[part].p_offset;
670 DNPRINTF(BOOT_D_OFDEV, "devopen: setting partition %d "
671 "offset %x\n", part, ofdev.partoff);
672 }
673
674 of->f_dev = devsw;
675 of->f_devdata = &ofdev;
676
677 /* Some PROMS have buggy writing code for IDE block devices */
678 parent = OF_parent(dhandle);
679 if (parent && OF_getprop(parent, "device_type", buf,
680 sizeof(buf)) > 0 && strcmp(buf, "ide") == 0) {
681 DNPRINTF(BOOT_D_OFDEV,
682 "devopen: Disable writing for IDE block device\n");
683 of->f_flags |= F_NOWRITE;
684 }
685
686 #ifdef SPARC_BOOT_UFS
687 bcopy(&file_system_ufs, &file_system[nfsys++], sizeof file_system[0]);
688 bcopy(&file_system_ufs2, &file_system[nfsys++], sizeof file_system[0]);
689 #endif
690 #ifdef SPARC_BOOT_HSFS
691 bcopy(&file_system_cd9660, &file_system[nfsys++],
692 sizeof file_system[0]);
693 #endif
694 DNPRINTF(BOOT_D_OFDEV, "devopen: return 0\n");
695 return 0;
696 }
697 #ifdef NETBOOT
698 if (!strcmp(buf, "network")) {
699 ofdev.type = OFDEV_NET;
700 of->f_dev = devsw;
701 of->f_devdata = &ofdev;
702 bcopy(&file_system_nfs, file_system, sizeof file_system[0]);
703 nfsys = 1;
704 if ((error = net_open(&ofdev)))
705 goto bad;
706 return 0;
707 }
708 #endif
709 error = EFTYPE;
710 bad:
711 DNPRINTF(BOOT_D_OFDEV, "devopen: error %d, cannot open device\n",
712 error);
713 OF_close(ihandle);
714 ofdev.handle = -1;
715 return error;
716 }
717